#include<stdio.h>
int main(){
    int n;
    scanf("%d",&n);
    int marble[100];
    for(int i=0;i<n;i++){
        scanf("%d",&marble[i]);
    }
    int x;
    scanf("%d",&x);
    int *ptr=marble;
    int found=0;
    for(int i=0;i<n;i++){
        if(*(ptr+i)==x){
            found=1;
            for(int j;j<n;j++){
                *(ptr+j)=*(ptr+j+1);
            }
            n--;
            break;
        }
    }
    if(found){
        for(int i=0;i<n;i++){
          printf("%d",*(ptr+i));
        }else{
              printf("Marble not found");
        }
        return 0;
    }
    
}